.background{
	position: absolute;
	left: 0px;
	top: 0px;
	width: 0px;
	height: 0px;
	backdrop-filter: blur(2px);
	z-index: -1;
}


.urlInput {
	display: block;
	margin: 0 auto;
	width: 40em;
	height: 2.5em;

	font-family: Arial, "微软雅黑";
	font-size: larger;
	font-weight: bold;

	background-color: rgb(238, 238, 241);

	padding-left: 1em;

	margin-top: 40px;

	border-radius: 4px;

	transition: margin-top 0.5s, box-shadow 0.5s, background-color 1s;

	border: none;
}


.urlInput:focus {
	margin-top: 300px;
	box-shadow: 0px 0px 8px black;

	background-color: white;

	transition: margin-top 0.5s, box-shadow 0.5s, background-color 1s;
}

input {
	outline: none;
}
